//
//  Student.h
//  0921Runtime
//
//  Created by 丁建忠 on 15/12/30.
//  Copyright © 2015年 丁建忠. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface Teacher : NSObject

- (void)teach;

@end


@interface Student : NSObject {
    @public
    Teacher *_teacher;
}
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) NSUInteger age;


@end
